The Perfect Insider

Alt title: Subete ga F ni Naru: The Perfect Insider

After the first murder, Shiki's uncle, Director Shindou, is killed as well. The lab is in an uproar. To find out who the killer is, Nishinosono and Saikawa investigate Shiki's room. There they find a robot named Michiru, and a strange message saying "Everything becomes F."

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Satoru Fujinuma is a reclusive part-timer with no plans for the future. What sets him apart from the other slackers in his town is an involuntary time travel ability that allows him to jump back several seconds in time in order to prevent accidents and even deaths. As incidents around town begin reminding Satoru of a childhood trauma he'd sooner forget, he...

Perfect Insider and Erased are very much alike and enough that, the first show I thought about that was similar to Perfect Insider after watching a few episodes was Erased. Both shows center around murder and a serial killer and the incidents trace back to the past of 10 or more years back.

Both are pretty intense and dark at times, both have pretty interesting reveals (the perfect insider more so than erased, although Erased as a whole is better), and they both are a little underwhelimg at the very end.

They both contain a romance element that isn't the main point of the story, and they both have secret, twisted villains.

26 years ago, something terrible happened in a middle school’s third year classroom. A popular, talented student named Misaki suddenly died, and the ramifications of that incident have caused each third year class since then to live in fear. It is now 1998, and Kouichi Sakakibara has just transferred into the notorious classroom, curious about the...

Most girls that wake up in the home of a serial killer would panic, but not Ray. In fact, her meeting with the killer Zack is actually quite convenient because her only wish is to find a good way to die.

Tags

They are quite different, but what they have in common is a building that main characters are trapped in. Mystery ( trying to solve a murder/ the reason they're in that place) and fighting for their lives whilst they're in danger.

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